Debbie:   I had Stadol during labor with my 2nd baby--only other med was a
paracervical.  No Pit, no epidural, no prolonged labor.  On the delivery
table he was tongue-bunching (I likened it to "banging" the nipple w/his
tongue), and sucked on his tongue between feeds.  He ended up in NICU with
sepsis, on IV antibiotics, and getting bottles for 16 hours, breast for 8
hours, for 2 weeks.  The dysfunctional suck continued until he was 3 months
old.  If it had been my first baby, I probably would have given up.
 Fortunately, I'm like a dairy cow when lactating, & I was able to manually
express milk into his mouth at each feed.

Your mom has the "advantage" of not having baby in NICU, but all the meds &
interventions (and, I believe, especially the Stadol) have knocked this kid
for a loop neurologically.   Perhaps if she can "hang on" another week or
two, offering breast when baby isn't ravenous, perhaps using SNS or some such
device if she can't express directly into his mouth, if she can avoid feeding
w/artificial nipple, baby might "mature" more quickly.

Another hint, passed on to me by a veteran LC who is also a physical
therapist:  sometimes baby needs to have his head oriented in a particular
position in order to be "centered" neurologically.  Have her lay baby on her
lap, feet going up her abd/chest, and stimulate him to suck on her finger.
 Slowly move the finger to each side, making baby's head turn to stay latched
on.  See if there isn't some spot where baby's suck becomes more effective
w/head turned one way or the other.  Sort of like "fine-tuning" a radio
station, go slowly back and forth to find where "signal" is strongest.  Once
I found where my son's head had to be to get the best suck out of him, I
positioned him to feed so his head would be turned that way.

Hope this helps!  By the way, once he caught on, Pete went on to nurse for 2
1/2 years.

Carol