As salaamu 'alaikym warahmatullahi wabarakatuh, sister.
Insha'Allah, we have been told by the Prophet Muhammad, salaahu 'alaihi wasalaam, to greet all with "peace" or "salaam" however, when we see a Muslim brother or sister, it is customary to greet them with "As salaamu 'alaikym" meaning, "peace be with you". the customary reply is "Wa'alaikym salaam" meaning, "and peace be with you" so as to return the same.
Insha'Allah, one might also choose to greet one's brother or sister in Islam with "As salaamu 'alaikym warahmatullahi wabaraktuh", meaning "The peace and blessing of Allah, Subhanna wa Ta'ala, be uopn you". The customary reply would then be, "Wa'alaikym salaamu warahmatullahi wabaraktuh", meaning "and the peace and blessing of Allah, Subhanna wa Ta'ala, be uopn you."
"Wa" may be translated as "and", "too" or also" depending upon the usage.
ma'a salaam