HUSK (AoA) Vs GHOST RIDER
Powers
Both characters are almost completely resistant to physical blows (in ghost rider / mutated form) so a physical fight will not get anywhere fast. GR has the advantage with some additional methods of attack - the use of his Hellfire and the penance stare.
Location
The Baxter building provides numerous hiding places for Paige. By converting her skin to resemble the walls of the building she can camouflage herself to avoid detection if GR is ever in the immediate area until he leaves. She will know that her best bet is to use stealth and avoid confrontation while looking for anything that can help her such as Reed's gadgets & weaponry (Ultimate Nullifier would come in handy

). Husk will not attempt any aggressive maneuvers until she is attacked so GR will be taken out or at least hampered severely by the security systems. The building is likely to have some king of defence against GR's Hellfire and a depowering facility somewhere within its security system when it detects the presence of an unknown demonic entity and this is likely to force GR to revert to human form at some point and become vulnerable. If these measures weren't included in the security systems, even the FF would be unable to defend their home from any similar demonic characters.
Prep time
Ghost Rider will be unable to find anything on Husk being from the AoA. However, information on Ghost Rider will be available for her to use. She will know that although she is resistant to most of his attacks (aside from Hellfire or penance stare) she has to either find a way to force him back to his human form where he is vulnerable or use special weapons on him.
CONCLUSION
Husk needs to use stealth to stay out the way of GR's Hellfire until she can find a way (or is helped out by the security systems) to finish him or get him into human form if she is to win this fight.
HIding would not Really help her if ghost rider is near bye he has the ability to sense evil since she has killes people and had evil intent in the futur towards the x-men he could easily sense her then its all about wrapping her tight with the magical chain which can not be destroyed and sear her soul with the peneance stare.
Also when it comes to the security system even if in a amll hallway or room ghost rider can still use his bike to be fast enoguh to avoid being distracted byt the security system.