For Regen:
Instead of Slow (-2), your player could instead take Limited Width
(-1). This causes the power to function at width 1 regardless of
rolled (or hard diced) results, which seems to be exactly what she's
going for: 1 point of healing, every round. Now granted, it is less
of a points saving, so she might not like that as much. Either path
gives an average of 1 shock and 1 killing healed, to each location,
every round. Alternatively, if she wants something more like rapid
natural healing rather than true regeneration, you could go with the
Exhausted (-3) flaw, and say that it heals 2 shock 2 killing every
*hour*. You could even slap Limited Width onto THAT for some truly
restricted healing. And I don't think Slow or Exhausted on a
Permanent power is unkosher, at least, not for the way you built it.
In some cases I'd raise an eyebrow, but you've used it to represent an
always active, but very slow, mutant healing factor. I did the same
thing on a character that I just started playing, actually.
Also, unless Grim War has rules that I'm not aware of (as my GM has
forbidden me from looking at it), Self Only is a three-point flaw.
TOUCH Only is the two-pointer. So get some more points back for the
spending.
For the second quality of her Regeneration, so long as the toxins were
specifically biological-based toxins, I'd probably just let her have
it. Hotjets is on the other side of the fence, so it really is your
call. If she wants a truly broad-spectrum sort of regeneration, have
her take the Variable (+4) extra. Also, Always On is Always On; if
she can't turn it off, she can't (even if you'd never really want to
turn something like Regen off!). And again, Self Only is a three-
pointer.
For Extra Hard to Kill:
Hotjets covered my points, the only thing I want to add is that Always
On would still apply, IF she wanted not choice in whether or not the
power activated. Its a bitch to kill her, even if she wants to die.
For Heat Absorption:
Actually, I'm not certain what you're trying to do with this one. It
is a Touch-based power, but affects multiple targets? Does she have
to touch each target, or does touching the first start a cascade? Or
does it only work against one target, but then the entire area around
her is cooled off? Give me a description of what the power does, and
I'll toss stats your way for it (if they need improved upon).