Only child dealing with parent that lives out of state

[PossiblePasts]

Hello,
Looking for advice and a shoulder to lean on.

My Mother isn't in the best of health and was recently hospitalized due to a fall and C-Diff. She lives in an affordable senior citizen apartment in the area I grew up in. However, I haven't lived in the area for 20 years(including 11 years living abroad) and it is a 5.5hr drive away.
She has Medicare and her state Medicaid.

Driving down to see her on weekends is getting very draining. Ideally she could move in with us, but we have a teenager with special needs that are varied and include behavior issues. I'll be honest and say that I'm not mentally strong enough to deal with my child with special needs (we also have another child who is a moody teenager) and Mother under one roof.

I've called various affordable senior citizen apartments in my area only to be told that the waiting list is either 4-6 years long or closed altogether.

My husband and I don't have the $$$$ needed a month to move Mom into a private assisted living facility. What little extra we have we are saving for our retirement, college for our typical teenager, and care for our child with special needs.

Just reaching out to see if anyone else is in a similar situation.