Just Curious About 5-Year-old's Speech

Don't wait for it to "correct itself." Not all speech issues do, and her history of speech delays means she may be less likely to correct this over time on her own. The longer you wait, the more she has to "unlearn" a pattern and the more ingrained it may become. It's nice that you're trying to help her correct this, but a professional speech therapist who specializes in young children could help her correct it much faster and more accurately. Get her evaluated today. My daughter was an early and good, clear talker but by age four was using V for the TH sound -- saying "muvver" instead of "mother," for instance -- and it only took about four months of weekly speech therapy to take care of it. That was all. And she loved going, because the therapist specialized in kids and knew how to make it all seem like fantastic one-on-one play time with a very engaged adult.

And please don't wait for an elementary school teacher to correct it. They're not speech therapists and might not even notice the issue for a while -- teachers today are so overworked and classes so large that they cannot possibly work with kids on things like this. A teacher likely would just suggest you find a therapist, so you'd be right where you are now, only a few years further behind. I'd get her evaluated now and start some therapy to get her past it before she starts school.

"L" is like the last sound they make properly that sound does not come out correctly until closer to 6. Do not worry about the letter L it will come ;)

My son had same issue and had speech therepists to catch him up linguisticly, he has all of his letters that are age appropriate, his speech therepist just let him go because he is where he needs to be and "L" is no where close it's a "w" type sound here - she confirmed closer to 6.

Get a Speech Therapist.
And since, she has always had speech delays.

Sometimes it resolves itself. Sometimes it does not.
You tried yourself to correct her enunciation and it did not work.
Get a Professional.

Some kids, go on throughout elementary school, with speech issues or enunciation issues. Some do not.
I see this at school, where I work at my kids' school.
I see this one 3rd grader for example, that still... cannot enunciate well.

My son, he had speech therapy for speech delays & enunciation, until he was almost 3 years old. Prior to 3 years old, it is free. Via the local 'early childhood intervention' programs. For example. It helped a great deal.

Speech enunciation, is also age related and developmental.
Your child also had hearing issues. Which surely impacted her ability for enunciation.
But it can also be the mechanics of the mouth/tongue/throat coordination, which is also what "speech" is about. It is not just about "talking."
I learned a ton, from my son's Speech Therapist.

Sounding out letters, or certain letters, is also an age related developmental thing.
But if you feel she needs help, then consult with a professional.

Also, a "Teacher" is not a Speech Therapist. So do not expect, the Teacher, to correct it totally.

Get her speech assessed now to determine what issues she may have and the speech pathologist's recommendation for whether treatment is necessary. Speech issues can cause issues in learning to read and write. If treatment is needed, delaying it would be a disservice to your daughter. Don't delay this, as speech really does impact more than just talking.

i saw the speech therpaist through school for my slur it was fun. I'd go if its free. It cant hurt. My niece never had hearing issues and still has troubles with certain sounds. yewwow is my favorite, her brother did it too, he's 13 now and speaks perfectly=) i love when they still sound little and adorable=) you'll miss it when it's gone