Bonecraft & Skin Trap on an Ally

Can an ally remove Skin Trap or Bonecraft?

Both cards require the burning of blood to cancel or remove them. Allies have life, not blood (unless the card specifies otherwise or the Ally card says it can pay costs with life instead of blood).

My knee-jerk opinion is most normal allies cannot, and so, they are probably stuck with Bonecraft for the rest of the game.

Name: Skin Trap
[SW:U, Third:U]
Cardtype: Combat
Cost: 1 blood
Discipline: Vicissitude
Play before range is determined.
[vic] Opposing minion may not attempt to dodge this round. A vampire can play only one Skin Trap each round.
[VIC] As above, and opposing minion cannot strike at all this round unless he or she burns 1 blood immediately.

Name: Bonecraft
[Sabbat:C, SW:C/PT, Third:PTz3/SKTz3]
Cardtype: Combat
Cost: 1 blood
Discipline: Vicissitude
[vic] Strike: 1 damage. Put this card on the opposing minion. The minion with this card has -1 strength. (This does not affect the current Strike Resolution step.) He or she may burn this card by paying 2 blood as a +1 stealth action.
[VIC] As above, but the minion with this card has -2 strength.