Advice on non-walking toddler

My daughter is 21 months and doesn't walk on her own nor is showing any desire to walk. Overall, she is delayed. She didn't roll over, sit up, crawl or cruise "on time". We've had her in early intervention for a year now from the point that she wasn't sitting up on her own without falling over. I remember thinking that she was never going to be able to crawl or stand up or cruise but she does those well now. She crawls all over the place and will use a walker if you give her one.She's been doing walking therapy since October and she hates to walk. She'll pull herself up on the couch, climb on chairs and pull up to play with toy tables. You can even give her something to play with, plop her up right and she'll stand there and play with it but eventually she goes to the ground. But if you stand her up a few feet away from something she wants, she'll drop down and crawl to it. She will hold my hands and walk, but her stride is no where there yet.The walking therapy is improving where she will walk for a long time and check her balance and do well, but she cries and doesn't want to do it. There have been times where she walks without crying too, so we don't think there is any physical issues causing pain.Everyone just keeps telling me that, "oh, she'll walk when she's ready", or "everyone goes at their own pace but everyone gets there", but I feel like I'm the only parent here with a child that isn't walking. And she's our 2nd as we have a 3 year old boy who walked on his 1st birthday and never had issues wanting to walk, but he was also in the EI program for motor skills because his balance wasn't that great and would fall a lot. Bot my kids do the "W" sit and is impossible to break that habit, but my wife also sits that way!Doctors and therapists don't seem to have any major concerns about us seeing any neurologist or perform any diagnostic tests.Any advice you guys can think of would be great, from both a parenting point of view, and dealing with the parental stress of being depressed that my daughter is so delayed. She doesn't talk either. Both my kids are in the EI speech therapy programs also. But my son does speech very well now. via /r/Parenting http://ift.tt/2pZGQvM