The rule is 'One player to a hand' Her hand should be dead when she receives the advice and acts on it.
From the 2015 TDA rules
62: No Disclosure
Players must protect other players in the tournament at all times. Therefore players, whether in the hand or not, must not:
1. Disclose contents of live or folded hands,
2. Advise or criticize play at any time,
3. Read a hand that hasn't been tabled.
One-player-to-a-hand is in effect. Among other things, this rule prohibits showing a hand to or discussing strategy with another player, advisor, or spectator.
And here is the penalty from 66
B: A penalty may be invoked if a player exposes any card with action pending, throws a card off the table, violates one-player-to-a-hand, or similar incidents occur. Penalties will be invoked for soft play, abuse, disruptive behavior, or cheating.