There is no direct translation to "Aide" in Spanish. The closest words are
Ayudande = Helper
Asistente = Assistant
Asesor = Adviser
Consultor = Consultant
No.
"merci pour ton aide / votre aide"
It doesn't mean anything in Spanish. In French it means 'help, assist'
Dieu nous aide, que Dieu nous aide
If you want to address someone formally, say "toute votre aide". If you want to address either a friend or someone who is younger, use "toute ton aide".
il/elle aide à l'hôpital
Merci de votre (or ton) aide.
J'ai besoin de votre aide
Marie aide son frère.
Seigneur au secours
Sister in law in Spanish is cunada.
How to say "hi" in spanish is Hola. How to say "bye" in spanish is Adios.